| 2.3 | . |
| 2.4 | |
| 3.4 | , , |
| 1. | , . |
| 2. | , , . |
| 3. | . |
| 4. | , , . |
| 5. | - . |
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3.
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, , , , , : 3:5:8(3+5=8); 5:8:13(5+8=13); 8:13:21 (8+13=21); 13:21:34(13+21=34).
, , 3:5:8 5:8:13.
. 400 2. (3:5:8) 16 : 400 2:16=25 2, 1 . 25 2 , : 25 2×3=75 (, , , , ); 25 2×5=125 2 ; 25 2×8-200 2 .
1
| 1. , 400 2 3:5:8 | 9. , 800 2 5:8:13 | 17. , 450 2 5:8:13 |
| 2. , 600 2 3:5:8 | 10. , 750 2 5:8:13 | 18. , 900 2 3:5:8 |
| 3. , 900 2 5:8:13 | 11. , 900 2 3:5:8 | 19. , 700 2 3:5:8 |
| 4. , 500 2 5:8:13 | 12. , 400 2 5:8:13 | 20. , 400 2 5:8:13 |
| 5. , 700 2 3:5:8 | 13. , 550 2 3:5:8 | 21. , 450 2 3:5:8 |
| 6. , 650 2 5:8:13 | 14. , 800 2 5:8:13 | 22. , 850 2 5:8:13 |
| 7. , 800 2 3:5:8 | 15. , 750 2 3:5:8 | 23. , 650 2 3:5:8 |
| 8. , 800 2 5:8:13 | 16. , 450 2 3:5:8 | 24. , 200 2 5:8:13 |
4.
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4. , , , , , , (, , ..), , , , , ;
5. ( , , ..);
6. 3;
7. 2, 3;
8. .1-2;
9. 3.
1.
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